/* Copyright (C) 2008  Romolo Camplani, Marco Fortunato, Marco Marelli, Guido Rota, Fabio A. Schreiber et al.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.dei.perla.parser.expressions;

/**
 * @author Stefano Vettor
 */
public class NodeLogicTest extends NodeLogicalOperation {
	
	private boolean notFlag;
	
	/**
	 * @param parFirst
	 * @param parSecond
	 */
	public NodeLogicTest(Node parFirst, Node parSecond, boolean parNotFlag) {
		super(parFirst, parSecond);
		this.notFlag = parNotFlag;
	}
	
	public Constant getResult() throws ConstantCreationException, ConstantCastException, OperationNotSupportedException, DivisionByZeroException {
		Constant result = this.getFirstNode().getResult().is(this.getSecondNode().getResult());
		if (notFlag)
			result = result.not();
		return result;
	}
	
	public Class<? extends Object> getResultType() throws OperationNotSupportedException {
		try {
			return (Class<? extends Object>) this.getFirstNode().getResultType().getMethod("isResultType", Class.class).invoke(null, this.getSecondNode().getResultType());
		} catch (Exception e) {
			throw new OperationNotSupportedException();
		}
	}
	
	public String toString()
	{
		if (notFlag)
			return "( " + this.getFirstNode().toString() + " IS NOT " + this.getSecondNode().toString() + " )";
		else
			return "( " + this.getFirstNode().toString() + " IS " + this.getSecondNode().toString() + " )";
	}

}
